John j



(No Model.)

- J. J. MOERLAIN.

- BAND PULLEY.

No. 394,712. Patented Dec. 18, 1888.

g M a ibi/149,13

N4 PEIERS, Pboln-lillwgrapmr. Wilmington. D (L s. UNITED STATES PATENT OFFICE. L

J OHN J. MCERLAIX, OF SOUTH BEND, INDIANA, ASSIGNOR OF ONEJIALF T FRANK A. BAKER, OF SAME PLACE.

BAND-PULLEY.

H SPECIFICATION forming part of Letters Patent No. 394,712, dated December 18, 1888.

Application filed March 22, 1888- Serial No. 268,106. (No model.) 0

To all whom it may concern: lugs c and three spokes on each flange t, Be it known that I, JOHN J. MCERLAIN, of and to the outer ends of these spokes are se- South Bend, in the county of St. Joseph and cured in suitable manner the sections II II of State of Indiana, have invented certain new the pulley-rim. Owing to the peculiar cons: 5 and useful Improvements in Band-Pulleys; struction of the flanges C, the spokes G G do and I do hereby declare that the following is not radiate from the aXis of the pulley, but a full, clear, and exact description thereof, tangentially thereto and to each other, as reference being had to the accompanying shown. \Vhen the sections of pulleys are drawings, and to the letters of reference bolted together, as shown, upon a shaft, no di- IO marked thereon, which form part of this rect longitudinal strain is given to any spoke, 6o specification, in whichso that should the ends of the rim-sections Figure 1 is a face view of my improved meet before the parts B are properly bound split pulley. Fig. 2 is a cross-sectional view to the shaft the spokes will yield laterally of the same. Figs. and at are detail views sufficiently to enable the hub-sections to be 15 of the sectional hub. properly bolted together. \Vhile the parting- The present invention is an improved split line of the rim-sections is diametrical to the pulley, and its objects are to so construct the axis of the pulley, still it is tangential to the 1 same that it can be readily and accurately separting-line of the hub-sections.

r cured 011 a shaft; and it consists in the novel I I represent rods passing through ad join- 20 and useful construction of the sectional hub ing spokes G of the opposite rim-sections and and arrangement of parts, as will be hereinprovided with suitable washers and nuts, 1', after described, and clearly stated in the by which the rods can be tensioned to draw claims. the ends of the rim-sections together. Owing Referring to the drawings by letters A A to the fact that only lateral strain can be ex- 2 5 represent the similar but opposite halves of ert-ed on the spokes G in securing the pulley the pulley-hub, which are constructed alike. in place, the hub-sections or the rim-sections Sections A have the cylindrical portions B B, can be tightened to compensate for slight erwhich inclose 'the shaft, and C C are outrors in length of the sections and make close standing flanges projecting centrally from joints throughout.

0 parts B. The portions B are formed on arcs The hub-sections I3 have on their inner So of a circle having the axis of the shaft upon faces a series of longitudinal grooves, Z) I), as which the pulley is mounted as its center, shown, for the reception of bushing-blocks J and the portions B are provided at their J, of wood or other suitable material. By vaedges above and below flanges C with radial rying the thickness of these blocks the pulley 3 5 perforated lugs E E, through which pass the can be titted to varying sizes of shafts. The bolts 6 e, for securing the portions of the blocks J may be fitted, inserted, and secured hub on the shaft. The end edges of flanges in place in the hub-sections before the pulley C (I, llOWG"0l, are not formed on lines radiatsent out of the shop to insure the true ing from the axis of the shaft, but on lines mounting of the pulley on its shaft.

40 projecting tangentially from its periphery at K K are metal plates corresponding in con- 0 opposite sides, as shown. It will thus be seen tour to flanges C C and bolted to the latter that while the parts B of the hubs are sepaabove the ends of spokes G, the bolts passing rated diametrically the flanges C C are not, through said spokes to secure the same in a but are divided on lines tangential to the place.

45 parts I Onthe inner faces of flanges 0 Having described my invention, I elaim 5 are formed the peripheral angular lugs c c, 1. In a split pulley, the combination, of the and in the coi'lntersinks f f between these opposite diametrically-parted hub-sections lugs are secured the inner ends of spokes having projecting flanges and the rim-sce- G G; tions, with the spokes secured to said flanges 50 In the drawingslhave illustrated but three and rim-sections tangentiallythereto, and the securing and uniting bolts and nuts for said hub and rim sections, all constructed and arranged substantially as described.

2. In a split pulley, the combination of tWo opposite sections, each composed of a flanged hub-section, spokes secured .to the flanges of the hub portions tangentially thereto, and

the diametrieally-opposite lugs on said pordescribed.

4. The combination of the hub-sections, the projecting flanges thereon having countersinks in. their inner faces, the spokes secured tangentially to said flanges, the rim-sections on said spokes, with the plates K K, rods I I,

and nuts '5, substantially as and for the purpose. described.

5. The combination of the hub-sections provided with the flanges O thereon, having peripheral' lugs c and the grooves Z) in the inner faces of said sections, With the blocks J, spokes G, plates K, rods I, and rim-sections l'I, all constructed and arranged substantially in the manner and for the purpose specified.

6. The combination of the opposite. pulleyseetions having hub-sections A ,A, formed with semi-cylindrical portions B B, having longitudinal grooves b b in their inner faces, with the series of bushing-blocks J, fitted into said grooves, and the uniting bolts and rods,

all constructed and arranged substantially as and for the purpose described.

In testimony that I claim the foregoing as 

